Azure WebJob服務總線觸發器無法完成

Question

我有一個Azure WebJob設置為連續運行，它使用Service Bus觸發器來讀取隊列和主題。 在處理隊列時，消息被發送到主題，我有一個主題來管理緩存更新。

暫時，我通過簡單地從函數返回來禁用緩存更新，以便從主題中清除消息。

public static void ProcessSearchUpdate([ServiceBusTrigger("events", "SearchClientUpdates", AccessRights.Listen)] BrokeredMessage message, System.IO.TextWriter log)
    {
        return;
    }

大部分時間，事情都按計划進行，消息只是被讀取和丟棄。 但是，有時，我得到以下異常，我假設是webjobs sdk試圖寫日志的東西。

如您所見，我的方法沒有做任何事情，因此不應該超時。

當它失敗時，它會阻止任何觸發器執行，這非常煩人。 似乎任何失敗的SDK都有5分鍾的超時時間，它可以防止任何事情運行5分鍾，加上重啟時間。

Microsoft.WindowsAzure.Storage.StorageException: Microsoft.WindowsAzure.Storage.StorageException: The client could not finish the operation within specified timeout. ---> System.TimeoutException: The client could not finish the operation within specified timeout.
 --- End of inner exception stack trace ---
 at Microsoft.WindowsAzure.Storage.Core.Util.StorageAsyncResult`1.End() in c:\Program Files (x86)\Jenkins\workspace\release_dotnet_master\Lib\ClassLibraryCommon\Core\Util\StorageAsyncResult.cs:line 77
 at Microsoft.WindowsAzure.Storage.Blob.CloudBlockBlob.EndUploadFromStream(IAsyncResult asyncResult) in c:\Program Files (x86)\Jenkins\workspace\release_dotnet_master\Lib\ClassLibraryCommon\Blob\CloudBlockBlob.cs:line 774
 at Microsoft.WindowsAzure.Storage.Blob.CloudBlockBlob.EndUploadFromByteArray(IAsyncResult asyncResult) in c:\Program Files (x86)\Jenkins\workspace\release_dotnet_master\Lib\ClassLibraryCommon\Blob\CloudBlockBlob.cs:line 1162
 at Microsoft.WindowsAzure.Storage.Blob.CloudBlockBlob.EndUploadText(IAsyncResult asyncResult) in c:\Program Files (x86)\Jenkins\workspace\release_dotnet_master\Lib\ClassLibraryCommon\Blob\CloudBlockBlob.cs:line 1285
 at Microsoft.WindowsAzure.Storage.Core.Util.AsyncExtensions.<>c__DisplayClass4.<CreateCallbackVoid>b__3(IAsyncResult ar) in c:\Program Files (x86)\Jenkins\workspace\release_dotnet_master\Lib\ClassLibraryCommon\Core\Util\AsyncExtensions.cs:line 114
 --- End of stack trace from previous location where exception was thrown ---
 at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
 at Microsoft.Azure.WebJobs.Host.Loggers.UpdateOutputLogCommand.<UpdateOutputBlob>d__10.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
 at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
 at Microsoft.Azure.WebJobs.Host.Loggers.UpdateOutputLogCommand.<SaveAndCloseAsync>d__6.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
 at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
 at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
 at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.<ExecuteWithLoggingAsync>d__13.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
 at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
 at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.<TryExecuteAsync>d__1.MoveNext()
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Answer 1

與WebJob日志系統有關的例外。 Azure WebJob SDK將定期將日志刷新到blob存儲。 為了解決超時問題，我們可以增加WebJob SDK用於此的CloudBlobClient的超時值。 以下步驟供您參考。

步驟1.使用NuGet將Microsoft.Azure.WebJobs的版本更新為2.0.0。

步驟2.實現我們自己的StorageClientFactory，它可以重置blob客戶端的超時值。

public class MyStorageClientFactory : Microsoft.Azure.WebJobs.Host.StorageClientFactory
{
    public override CloudBlobClient CreateCloudBlobClient(StorageClientFactoryContext context)
    {
        CloudBlobClient client = context.Account.CreateCloudBlobClient();
        client.DefaultRequestOptions.ServerTimeout = TimeSpan.FromMinutes(60);
        return client;
    }
}

步驟3.讓JobHost使用自定義StorageClientFactory。

JobHostConfiguration configuration = new JobHostConfiguration();
configuration.StorageClientFactory = new MyStorageClientFactory();

var host = new JobHost(configuration);